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Serum Lysozyme Concentration

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of lysozyme, a protein produced by white blood cells that helps fight bacterial infections. It may be checked to assess immune function or diagnose certain conditions.

Quick summary

["Lysozyme helps protect your body from infections; this test checks your levels for health or diagnostic purposes."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
56039-1
Short code
Lysozyme Ur-aCnc
Synonyms
Lysozyme Ur-aCnc
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Your healthcare provider may order this test if you have symptoms of an immune system issue, such as frequent infections, chronic inflammation, or certain autoimmune disorders. It could also be part of a broader evaluation for conditions like rheumatoid arthritis, Crohn’s disease, or other conditions affecting white blood cell function.

What Does a Result Mean?

Results may vary depending on your health and medical history. Abnormal levels could suggest an overactive immune response, infection, or a genetic condition affecting protein production. Your doctor will interpret results in the context of your overall health.

Common Conditions Monitored

Lysozyme levels are sometimes checked in people with conditions like inflammatory bowel disease, certain cancers, or inherited disorders of the immune system. It may also be part of a screening or monitoring plan for conditions affecting white blood cells.

Sample Collection and Preparation

A blood sample is drawn from a vein, usually in your arm. The blood is processed to separate serum (the liquid part without clotting factors) for testing. This test does not require fasting.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Lysozyme Level

Frequently asked questions

What Are Possible Causes of Abnormal Results?
Elevated lysozyme levels may be linked to infections, inflammatory diseases, or certain cancers. Lower-than-normal levels could indicate immune deficiencies or genetic disorders. Always discuss results with your doctor, as they may relate to specific conditions or treatments you’re undergoing.
How Often Should This Test Be Done?
The frequency depends on your medical needs. Your doctor may recommend this test periodically if you have an ongoing condition affecting immune function or if you’re being monitored for a known disorder.
Are There Any Risks or Side Effects?
The most common risk is mild discomfort or bruising at the needle site. Rarely, there may be a slight reaction to the blood draw, such as swelling or redness. Most people tolerate the procedure well.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy